Is there an advantage to adding git repositories to crucible which are not code reviewed?

We have several projects with several git repositories each. Most of those projects are in stash, but some are using plain git on another server. Some of those repos do not have source code, so their contents are not reviewed. Is there an advantage to adding all repos of a project into crucible?

The reason I ask is that we have some performance issues with larger repos, taking up to 20 minutes to sync. Therefore, we are planning to disable and/or remove the repos that are not part of the code review process. We presume removing the extraneous repos would free up some bandwidth, memory and cpu.

2. From Atlassian page above: Stash limits the number of Git operations that can be executed concurrently, to prevent the performance for all clients dropping below acceptable levels. These limits can be adjusted